This skyshard has had its location moved due to post-launch dungeon remodeling. You can now find it in the southern part of Rubble Butte. It is just next to a tree, close to the wooden beam cave supporters.
Entrance to Rubble Butte dungeon.
Rubble Butte entrance map location.
Between three enemies.
Rubble Butte map showing the location of the collectible.
Sand Kingdom Moons - Super Mario Odyssey Power Moons